Does Hill-Billy undercoating (i.e. used motor oil and a dusty trail) work? - Hot Rod Forum : Hotrodders Bulletin Board -- Hot Rod Forum

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Old 07-09-2013, 06:47 PM
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Does Hill-Billy undercoating (i.e. used motor oil and a dusty trail) work?

I've heard the old stories of farmers using a plant sprayer and giving their trucks a good coating of used crankcase oil then driving down a gravel road in order to prevent rust (sort of a cheap undercoating).

Today I read somewhere that in a town in the northeast there was a guy who made a living with a 55 drum full of heated used motor oil and a sprayer spraying the undercariage of cars. Then he proceeded to take a hammer and punch and punch a couple holes in the door bottoms and rocker panels and spray oil in those cavities. I saw that and it reminded me of the old hillbilly undercoating idea.

But does this work or does it just make a mess?

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Old 07-09-2013, 07:09 PM
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Yes .....and yes

Yes, it works and yes, it makes a mess

It does run off fairly quickly.....undercoating works better, is less messy
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Old 07-09-2013, 07:11 PM
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Yes it definately works.I have been having it done for years.I live in the heart of the rust belt,and oiling has saved many vehicles for me.The oiling saves brake and fuel lines too.I just sold a 98 Ranger that I had driven for 14 years and never replaced any brake or fuel lines.The truck had absolutely no rust on the frame or body. I bought a HHR panel in florida last month,and it is getting oiled soon. cars and trucks around here that are less than 5 or 6 years old are already rusted .not just frames and bodies,but gas tanks and oil pans etc. etc. .The oil soaks into pinch welds and spot welded seams and prevent the rust from forming. If there is some rust already,the oil will soak in to it and stop most rust.
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Old 07-09-2013, 07:16 PM
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Not a Hillbilly...but I am old,I do my Super Duty every fall before the snow,the dust and dirt film stick to the oil,then the next years oil sticks on top of that ,until theres a waterproof layer,if you take a putty knife and scrape a layer off,the factory frame paint is still shiny underneath,mine is an '06,my buddy sprays them for about 40 bucks,I have my own hoist in my shop,so I do my own,I thin the oil with a little Kero,and spray it with an undercoat gun,pretty common in the "rustbelt" northeast.
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Old 07-09-2013, 08:06 PM
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Ha ha, not a hillbilly either (from up north) so I guess the word up there would be lumberjack maybe?

I suppose there's a more politically correct term for "hillbilly" and I guess since I used it, that makes me one!

All jokes aside, not saying anyone here's a hillbilly, just what I've always heard this method called for rust proofing an undercarriage.

I'm always looking for a way to keep rust out. Those Super Duty's are worth preserving by the way.
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Old 07-10-2013, 10:20 AM
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driveway coating,

I have heard of guys mixing old motor oil with the asphalt drive way coating, and letting the car sit somewhere to drip for a couple days,
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